[LAD] Re: Pipewire

Le 2024-08-15 à 09 h 43, Marc Lavallée a écrit :

> It looks like the parameters can also be provided by the pipewire config.
>
Indeed, it seems to work.

I made a copy of the pipewire config (~/.config/pipewire/pipewire.conf)

I disabled dbus and added autoloading of the jack-tunnel module:

support.dbus = false
module.jackdbus-detect = false
module.jack-tunnel = true

I added a config file: ~/.config/pipewire/pipewire.conf.d/jack-tunnel.conf

Its content is based on what is in the source code of the module:

context.modules = [
{   name = libpipewire-module-jack-tunnel
     args = {
         #jack.library     = libjack.so.0
         #jack.server      = null
         jack.client-name = MyPipeWireTunnel
         #jack.connect     = true
         #tunnel.mode      = duplex
         #midi.ports       = 0
         #audio.channels   = 2
         #audio.position   = [ FL FR ]
         source.props = {
             # extra sink properties
         }
         sink.props = {
             # extra sink properties
         }
     }
}
]

So I only changed the client name to see if my custom config is being used.

Then I restarted pipewire. The jack sinks are present in pipewire, and 
also the pipewire jack clients. With 2 channels (stereo).

jack_lsp is reporting:
MyPipeWireTunnel:playback_FL
MyPipeWireTunnel:playback_FR
MyPipeWireTunnel:playback_0
MyPipeWireTunnel:capture_FL
MyPipeWireTunnel:capture_FR
MyPipeWireTunnel:capture_0

The jack server was started automatically by pipewire, even if I 
disabled jackdbus in /usr/share/dbus-1/services/org.jackaudio.service (I 
commented out the last line: # Exec=/usr/bin/jackdbus auto)

Pipewire used ~/.jackdrc to start jackd. If this file is not present, 
pipewire don't work, so there's now a dependency between pipewire and 
jack; pipewire is actually waiting for a ~/.jackdrc file, so once it's 
created by QJackCtl, pipewire starts.

I hope it helps!

Marc
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